Portion of a controller for electronic game machine



FIG. 1 is a front, top and left perspective view of a controller for electronic game machine showing a trigger button constituting a portion of the controller;

FIG. 2 is a rear, bottom and right perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof, a left side view being a mirror image thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a sectional view taken at line 8—8 of FIG. 3; and,

FIG. 9 is a reference perspective view showing a state that another controller is attached onto this controller.

The broken lines are for illustrative purpose only and form no part of the claimed design. 

The ornamental design for portion of a controller for electronic game machine, as shown and described. 